This last spell of cold weather my 1989 4x4 pickup 4cyl was having a severe problem when cold. Every morning when it was at or near 32'f, my truck would not get out of its own way. It would buck and fart really bad. But if I let it warm up alittle it would be better, but not perfect until full hot. The truck has 212,000 miles on it, but still runs strong now. It has always had a slight cold hold back, but never as bad as when it was really cold this couple of months. If anybody has any suggestions please let me know what it could possibly be. It already has a new Toyota fuel pump and Injectors. Anything would be helpful Thanks Brendon